Armstrong-James et al developed a prognostic scoring tool (PST) for evaluating a patient with HIV-associated Pneumocystis jirovecii pneumonia. This can help to identify a patient who may benefit from more aggressive management. The authors are from Imperial College London, London School of Hygiene and Tropical Medicine, University College London, Veterans Affairs Medical Center, University of Cincinnati and Camden Provider Services NHS Trust London.
Patient selection: HIV-associated pneumocystis pneumonia
Outcome: death
Parameters on admission:
(1) age in years
(2) history of previous episode of PJP
(3) evidence of pulmonary Kaposi sarcoma (PKS)
(4) medical comorbidity (non-Hodgkin's lymphoma, psychosis, neurological disease, disseminated cryptococcosis, disseminated histoplasmosis, chronic substance abuse, sepsis, heart failure, cardiomyopathy, chronic respiratory disease, thrombo-embolic disease, tuberculosis, Castleman diseease, hypothyroidism, acute renal failure, viral hepatitis, cachexia, pregnancy, etc)
(5) PaO2 in kPa on room air
(6) hemoglobin in g/dL
Parameter |
Finding |
Points |
age in years |
|
(age)/10 |
history of PJP |
No |
0 |
|
Yes |
2 |
pulmonary Kaposi sarcoma |
Absent |
0 |
|
Present |
4 |
comorbidity |
Absent |
0 |
|
Present |
3 |
PaO2 |
|
(-1) * (PaO2) |
hemoglobin |
|
(-1) * (hemoglobin) |
total score =
= SUM(points for all 6 parameters) + 25.5
Interpretation:
• The higher the score the greater the risk of mortality.
Score |
Group |
Mortality Rate |
< 4.0 |
1 |
0% |
4.0 to 7.9 |
2 |
3% |
8.0 to 10.9 |
3 |
9% |
11.0 to 14.9 |
4 |
29% |
>= 15.0 |
5 |
52% |
Specialty: Infectious Diseases